Cholera causes an influx of Chloride ions into the lumen of the bowel. How would this cause diarrhoea?

The influx of chloride ions into the lumen of the small bowel causes the water potential to decrease (become more negative). This causes an increased water potential difference between the lumen and the cells in the wall of the bowel. Water then leaves these cells via osmosis and enters the lumen.

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Answered by Joseph T. Biology tutor

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